GoodByEmail stands apart from other inbox cleaning tools by not requiring you to grant access to your email account. You don’t have to “trust” GoodByEmail, since, by design, your emails are never uploaded to GoodByEmail’s servers. No OAuth, no third-party permissions. You can even run the tool offline.

GoodByEmail’s shows users exactly who their biggest inbox space offenders are and how much space all those emails take up. Oh, and of course, you can also unsubscribe from pesky mailing lists.